Update README.md and CONTRIBUTING.md documentation

Changes:
   - Replace deprecated code with latest example for usage.
   - Alignment and spacing changes.
   - Move template example from README.md to CONTRIBUTING.md.

Change-Id: I0b42667748f4657d3816f3aa6ec01b7be58e3332
Signed-off-by: George Keishing <gkeishin@in.ibm.com>
2 files changed